24 Best Window Replacement Companies in Haverhill, MA (2023 Reviews)
Window Companies Near Me

Looking to improve your home's value? The top window replacement companies can help.

We analyzed all the top window installers in Haverhill and selected the top 24 based on:

  • Customer reviews
  • Window replacement expertise
  • Popularity with home-owners like you
EcoWatch Local Advisors

By EcoWatch Local Advisors

Updated March 14, 2023

Why you can trust EcoWatch

Our panel of energy experts work tirelessly to create unbiased reviews and informative content to help homeowners make educated decisions. No other windows site has covered energy efficiency and sustainability as long as EcoWatch, which means we're going to help you find windows replacements that will save on your energy bill and put more money back in your wallet.

Although renewable energy sources like wind and solar are important when it comes to decreasing your carbon footprint, improving your home's energy efficiency can also have a big impact on home energy conservation. During the cold winter months, the last thing you want is your heat to leak out of your drafty windows.

That's also bad for the environment, as the extra energy used by damaged windows increases your carbon footprint.

Unlike other sites, EcoWatch ranks window companies on energy efficiency while also factoring in cost, customer satisfaction and service area.

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Manufactures products in-house
  • Great industry reputation
  • Award-winning company
  • More expensive than competition

Best Affordability

Window World

★★★★★
4.5

  • Large serice area
  • EnergyStar Partner
  • Great industry reputation
  • Quality of service will depend on your area

Best for Businesses

Aeroseal Windows

★★★★★
4

  • Manufactures products in-house
  • Many years of experience
  • Custom Designs
  • Not ideal for residential installations

Best Window Replacement Companies in Haverhill

The EcoWatch team researched dozens of window providers across Haverhill to narrow our list down to the top ones. We assessed the providers on their energy-efficient offerings, local experience, price, customer service, coverage area and more.

Renewal by Andersen logo
FAST QUOTE
as little as 30 seconds
Best Overall

Renewal by Andersen

★★★★★
BBB Rating: A
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Manufactures products in-house
  • Pros icon Great industry reputation
  • Pros icon Award-winning company
Cons:
  • Pros icon More expensive than competition

Renewal by Andersen offers the best availability in Haverhill. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has around 27 years of experience in the window replacement industry. Its reputation is backed by all the positive reviews from customers online.

If you're looking for a company that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started, this may be the perfect provider for you.

Energy Efficiency of Renewal by Andersen Windows

Renewal by Andersen is an Energy Star partner offering a variety of energy-efficient windows that are Energy Star certified. Note that not all of the company's windows are Energy Star certified, so be sure to mention that you want energy-efficient windows to your Andersen representative when inquiring about services.

How much does Renewal by Andersen cost in Haverhill?

Andersen does not list prices on its website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. If you'd like more accurate information, you can request a quote on the company's website.

Window World logo
FAST QUOTE
as little as 30 seconds
Best Affordability

Window World

★★★★★
BBB Rating: A+
Locations: Nationwide
Founded: 1995
Pros:
  • Pros icon Large serice area
  • Pros icon EnergyStar Partner
  • Pros icon Great industry reputation
Cons:
  • Pros icon Quality of service will depend on your area

Window World is the largest window replacement company in the country, known for its vinyl windows and affordability. Window World has been in the window industry for around 27 years. Hundreds of positive reviews from customers online back the company's reputation.

It has established itself as a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.

Energy Efficiency of Window World Windows

Window World is an Energy Star partner and has a variety of energy-efficient windows. Note that not all of the company's windows are Energy Star certified, so make sure to mention that you want energy-efficient windows to your Window World representative when inquiring about services.

How much does Window World cost in Haverhill?

Prices are not available on Window World's website, as the cost of window installment differs based on how many and what type(s) of windows you need. However, it's known for offering some of the most affordable window installations around. You can inquire about a free quote on its website for more information about the cost.

Aeroseal Windows logo
FAST QUOTE
as little as 30 seconds
Best for Businesses

Aeroseal Windows

★★★★★
BBB Rating: A+
Locations: Regional
Founded: 1999
Pros:
  • Pros icon Manufactures products in-house
  • Pros icon Many years of experience
  • Pros icon Custom Designs
Cons:
  • Pros icon Not ideal for residential installations

Aeroseal Windows has the best window installation for businesses in Haverhill. Aeroseal has over 23 years of experience in the windows industry, and it currently serves 13 states and Washington D.C.

Aeroseal may be the company for you if you want one that installs windows and doors at businesses across the Eastern U.S.

Energy Efficiency of Aeroseal Windows Windows

There are a wide range of window types available from Aeroseal Windows, some of which are Energy Star products. The company claims it helps businesses save on energy expenses and reduce their carbon footprints with energy-efficient windows, as well as practices like Low-E glass coating, weatherstripping and more.

How much does Aeroseal Windows cost in Haverhill?

Prices aren't mentioned on Aeroseal's website, but it provides high-quality windows at a competitive price point. The best way to get more accurate pricing information is to request a free quote from the company.

Window Nation logo
FAST QUOTE
as little as 30 seconds
Best for Residential Windows

Window Nation

★★★★★
BBB Rating: A
Locations: Regional
Founded: 2006
Pros:
  • Pros icon Award-winning company
  • Pros icon Manufactures products in-house
  • Pros icon Custom designs
  • Pros icon Wide variety of products and services
Cons:
  • Pros icon Installation not covered by warranty
  • Pros icon Limited service area

Window Nation is a company that serves hundreds of thousands of homeowners, mostly in the mid-Atlantic region of the U.S. Window Nation has about 16 years of industry experience, and it currently provides services to residents within 75 miles of its showrooms, which are in 13 states. The provider has plenty of positive reviews from customers on online review websites.

You may want to consider going with Window Nation if you're looking for a company that gives customers the opportunity to view products and to speak to a representative in person in its showrooms.

Energy Efficiency of Window Nation Windows

Window Nation has some Energy Star windows, but note that not all its windows are energy-efficient, so make sure you ask for Energy Star windows when inquiring. Each product has windowpanes coated with a Low-E (low emissivity) glaze that prevents damaging UV rays from heating your home. Plus, the spaces between double- and triple-pane windows are filled with argon gas that’s been proven to improve home insulation.

How much does Window Nation cost in Haverhill?

Window Nation doesn't have any prices available on its website, but based on customer feedback, you can expect to pay between $300 and $525 per window installed, making it a more affordable option compared to competitors. If you'd like to know for sure, you can inquire about a quote on the company's website.

One thing to note is that the companies in this section are national, which means the quality of customer service may depend on your local crew. We have tried to remain unbiased and transparent by including both pros and cons for each company.

More Window Replacement Companies in Haverhill

Coastal Windows & Exteriors

Beverly, MA
4.8
★★★★★
  • Pros icon No-fee Quotes
  • Pros icon Educational Website
  • Pros icon Excellent Customer Service
  • Pros icon Reliable Service

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Energy-Efficient Options
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Double-Hung
  • Service icon Stained Glass
  • Service icon Sliding Glass

Website: https://mycoastalwindows.com/
Address: 236 Cabot St, Beverly, MA 01915
Phone: (978) 861-3019

Merrimack Valley Glass & Mirror

Newburyport, MA
4.3
★★★★★
  • Pros icon Price Transparency
  • Pros icon No-fee Quotes
  • Pros icon Reliable Appointment Windows
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Double-Hung
  • Service icon Full-Service Installations
  • Service icon Custom Window Designs
  • Service icon Stained Glass
  • Service icon Residential Windows
  • Service icon Business Windows
  • Service icon Sliding Glass
  • Service icon Aluminum Window Frames
  • Service icon Glass Showers

Website: https://www.merrimackvalleyglass.com/
Address: 5 Perry Way #7, Newburyport, MA 01950
Phone: (978) 463-9990

NEWPRO

Woburn, MA
4.1
★★★★★
  • Pros icon Timely Service
  • Pros icon Good Customer Service
  • Pros icon No-fee Quotes
  • Pros icon Helps Educate Customers

Services Offered

  • Service icon Glass Showers
  • Service icon Energy-Efficient Options
  • Service icon Custom Window Designs
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.newpro.com/contact-us/woburn/
Address: 26 Cedar St, Woburn, MA 01801
Phone: (781) 933-4100

Nashua Glass

Nashua, NH
4.1
★★★★★
  • Pros icon No-fee Quotes
  • Pros icon Helps Educate Customers
  • Pros icon No-Hassle Pricing
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Tempered Glass
  • Service icon Doors
  • Service icon Custom Window Designs
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: http://www.nashuaglass.com/
Address: 110 Chestnut St, Nashua, NH 03060
Phone: (603) 882-0648

Northern Glass LLC

Ipswich, MA
4.1
★★★★★
  • Pros icon Arrives on Time
  • Pros icon Good Customer Service
  • Pros icon Free Quotes
  • Pros icon No-Hassle Pricing

Services Offered

  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Tempered Glass
  • Service icon Doors
  • Service icon Custom Windows
  • Service icon Full-Service Installations
  • Service icon Commercial Windows
  • Service icon Sliding Glass

Website: https://northern-glass.com/
Address: 29 Hayward St, Ipswich, MA 01938
Phone: (978) 356-7942

The Window Source NH

Seabrook, NH
4.0
★★★★★
  • Pros icon Price Transparency
  • Pros icon Dependable Service
  • Pros icon Free Quotes
  • Pros icon Educational Website

Services Offered

  • Service icon Architectural Glass
  • Service icon Fast Delivery
  • Service icon Energy-Efficient Options
  • Service icon Custom Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: http://www.windowsourcenh.com/
Address: 779 Lafayette Rd Suite 1, Seabrook, NH 03874
Phone: (888) 282-2912

Window World of Boston

Woburn, MA
3.9
★★★★★
  • Pros icon Helps Educate Customers
  • Pros icon Excellent Customer Service
  • Pros icon Locally Recognized for Quality
  • Pros icon Reliable Appointment Windows

Services Offered

  • Service icon Sliding Glass
  • Service icon Custom Window Designs
  • Service icon Energy-Efficient Options
  • Service icon Double-Hung

Website: https://www.windowworldofboston.com/
Address: 15 A Cummings Park Dr, Woburn, MA 01801
Phone: (781) 202-6460

Timberlane Glass and Mirror

Plaistow, NH
3.7
★★★★★
  • Pros icon Dependable Service
  • Pros icon No-Hassle Pricing
  • Pros icon Good Customer Service
  • Pros icon Helps Educate Customers

Services Offered

  • Service icon Full-Service Installations
  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Sliding Glass
  • Service icon Commercial Windows

Website: http://www.timberlaneglass.com/
Address: 108 Main St, Plaistow, NH 03865
Phone: (603) 382-6969

King Shade & Window Co.

West Roxbury, MA
3.7
★★★★★
  • Pros icon Dependable Service
  • Pros icon No-Hassle Pricing
  • Pros icon No-fee Quotes
  • Pros icon Educational Website

Services Offered

  • Service icon Double-Hung
  • Service icon Full-Service Installations
  • Service icon Custom Windows
  • Service icon Business Windows
  • Service icon Energy-Efficient Options
  • Service icon Architectural Glass

Website: https://www.kingshadeandwindow.com/
Address: 1764 Centre St, West Roxbury, MA 02132
Phone: (617) 323-0600

Southers Construction

Dover, NH
3.7
★★★★★
  • Pros icon Excellent Customer Service
  • Pros icon Helps Educate Customers
  • Pros icon No-fee Quotes
  • Pros icon Reliable Service

Services Offered

  • Service icon Double-Hung
  • Service icon Full-Service Installations
  • Service icon Custom Window Designs

Website: http://southersconstruction.com/
Address: 12 Crosby Rd, Dover, NH 03820
Phone: (603) 605-8037

Weaver Glass LLC

Beverly, MA
3.6
★★★★★
  • Pros icon Educational Website
  • Pros icon Excellent Customer Service
  • Pros icon Price Transparency
  • Pros icon No-fee Quotes

Services Offered

  • Service icon Residential Windows
  • Service icon Glass Showers
  • Service icon Doors
  • Service icon Custom Windows
  • Service icon Business Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.weaverglassllc.com/
Address: 393 Rantoul St, Beverly, MA 01915
Phone: (978) 922-5511

Boston Glass Group

Chestnut Hill, MA
3.6
★★★★★
  • Pros icon Dependable Service
  • Pros icon No-Hassle Pricing
  • Pros icon Free Quotes
  • Pros icon Excellent Customer Service

Services Offered

  • Service icon Residential Windows
  • Service icon Tempered Glass
  • Service icon Doors
  • Service icon Custom Window Designs
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://www.bostonglassgroup.com/
Address: 801 Boylston St, Chestnut Hill, MA 02467
Phone: (617) 505-6091

Rite Window

Woburn, MA
3.6
★★★★★
  • Pros icon Excellent Customer Service
  • Pros icon Price Transparency
  • Pros icon Educational Website
  • Pros icon Dependable Service

Services Offered

  • Service icon Custom Window Designs
  • Service icon Glass Showers
  • Service icon Energy-Efficient Options
  • Service icon Double-Hung

Website: https://ritewindow.com/
Address: 7 Roessler Rd, Woburn, MA 01801
Phone: (781) 491-0419

Pro Entry Installs LLC

Salem, NH
3.6
★★★★★
  • Pros icon Locally Recognized for Quality
  • Pros icon Excellent Customer Service
  • Pros icon Helps Educate Customers
  • Pros icon Price Transparency

Services Offered

  • Service icon Custom Windows
  • Service icon Residential Windows
  • Service icon Double-Hung
  • Service icon Bay & Bow Windows

Website: https://proentry.com/
Address: 7 Cassidy Ave #2863, Salem, NH 03079
Phone: (603) 765-1312

Window World of New Hampshire

Manchester, NH
3.6
★★★★★
  • Pros icon Free Quotes
  • Pros icon Charitable Giving
  • Pros icon Educational Website
  • Pros icon Good Customer Service

Services Offered

  • Service icon Custom Windows
  • Service icon Architectural Glass
  • Service icon Sliding Glass
  • Service icon Double-Hung

Website: https://www.windowworldnewhampshire.com/
Address: 735 E Industrial Park Dr Unit A, Manchester, NH 03109
Phone: (603) 935-9878

Boston Glass & Boarding Service Inc.

Dorchester, MA
3.6
★★★★★
  • Pros icon Price Transparency
  • Pros icon Good Customer Service
  • Pros icon Timely Service
  • Pros icon Helps Educate Customers

Services Offered

  • Service icon Custom Windows
  • Service icon Residential Windows
  • Service icon Commercial Windows
  • Service icon Sliding Glass

Website: http://www.bostonglassinc.com/
Address: 1068 Dorchester Ave, Dorchester, MA 02125
Phone: (617) 298-5755

A&A Services Home Improvement

Salem, MA
3.6
★★★★★
  • Pros icon Timely Service
  • Pros icon Dependable Service
  • Pros icon Helps Educate Customers
  • Pros icon No-fee Quotes

Services Offered

  • Service icon Custom Windows
  • Service icon Fast Delivery
  • Service icon Architectural Glass
  • Service icon Double-Hung

Website: https://www.a-aservices.com/
Address: 115 North St, Salem, MA 01970
Phone: (978) 354-7579

Arlmont Glass & Mirror

Medford, MA
3.4
★★★★★
  • Pros icon No-Hassle Pricing
  • Pros icon Good Customer Service
  • Pros icon Helps Educate Customers
  • Pros icon Free Quotes

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Custom Window Designs
  • Service icon Business Windows
  • Service icon Double-Hung

Website: http://www.arlmontglass.com/
Address: 427 High St, Medford, MA 02155
Phone: (781) 391-2044

Melrose Glass Co

Melrose, MA
3.4
★★★★★
  • Pros icon Award-Winning
  • Pros icon Educational Website
  • Pros icon No-fee Quotes
  • Pros icon Price Transparency

Services Offered

  • Service icon Residential Windows
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Business Windows
  • Service icon Double-Hung

Website: http://www.melroseglass.com/
Address: 169 Main St, Melrose, MA 02176
Phone: (781) 662-8599

Guaranteed Aluminum & Vinyl Inc

Lowell, MA
3.3
★★★★★
  • Pros icon Free Quotes
  • Pros icon No-Hassle Pricing
  • Pros icon Good Customer Service
  • Pros icon Consistent Workmanship

Services Offered

  • Service icon Residential Windows
  • Service icon Custom Windows
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows
  • Service icon Double-Hung
  • Service icon Sliding Glass

Website: https://lowell-window-replacement-glass-repair.com/
Address: 349 Bridge St, Lowell, MA 01850
Phone: (978) 452-2392

Demers Plate Glass Co

Haverhill, MA
3.3
★★★★★
  • Pros icon Good Customer Service
  • Pros icon No-Hassle Pricing
  • Pros icon Free Quotes
  • Pros icon Educational Website

Services Offered

  • Service icon Residential Windows
  • Service icon Architectural Glass
  • Service icon Doors
  • Service icon Custom Window Designs
  • Service icon Aluminum Window Frames
  • Service icon Commercial Windows

Website: https://www.demersplateglass.com/
Address: 373 River St, Haverhill, MA 01832
Phone: (978) 374-6387

Pella Windows & Doors of Woburn

Woburn, MA
3.3
★★★★★
  • Pros icon Locally Recognized for Quality
  • Pros icon Good Customer Service
  • Pros icon Helps Educate Customers
  • Pros icon No-fee Quotes

Services Offered

  • Service icon Custom Window Designs
  • Service icon Sliding Glass
  • Service icon Double-Hung

Website: https://www.pellabranch.com/boston/showrooms/woburn/
Address: 59 Commerce Way, Woburn, MA 01801
Phone: (781) 935-4947

Clear Choice Home Improvements

Manchester, NH
3.3
★★★★★
  • Pros icon Free Quotes
  • Pros icon Award-Winning
  • Pros icon Arrives on Time
  • Pros icon Good Customer Service

Services Offered

  • Service icon Custom Windows
  • Service icon Sliding Glass
  • Service icon Double-Hung

Website: http://www.clearchoicehomeimprovement.com/
Address: 8025 S Willow St #107, Manchester, NH 03103
Phone: (603) 232-0237

GF Sprague & Company, Inc.

Needham, MA
3.3
★★★★★
  • Pros icon Educational Website
  • Pros icon No-Hassle Pricing
  • Pros icon Charitable Giving
  • Pros icon Free Quotes

Services Offered

  • Service icon Custom Window Designs
  • Service icon Residential Windows
  • Service icon Aluminum Window Frames

Website: https://www.gfsprague.com/
Address: 45 Kearney Rd, Needham, MA 02494
Phone: (781) 348-9922

How Installing Energy-Efficient Windows in Haverhill Saves You Money

By switching to energy-efficient windows, you can enjoy several benefits, such as:

  • Protect your valuables from fading: The low-emissivity coatings on many energy-efficient windows filter out harmful UV rays, preventing fading of your furniture, carpet and other valuables.
  • Save on energy bills: Since energy-efficient windows decrease the amount of energy needed to heat or cool your home, the switch can help you save about $434 annually on your energy bills in Haverhill.
  • Protect your investment: When your home is on the older side, your windows could also be outdated or drafty. Upgrading your windows is an important part of maintaining your property and its real estate value.
  • Decrease your carbon footprint: Decreasing the amount of energy you use also lowers your indirect greenhouse gas emissions. You could reduce it by about 139 pounds.

Estimated Cost of Window Replacement in Haverhill

When researching window installation, each company provides different services and costs. Let's take a look at some typical costs and services.

How Much Do New Windows Cost?

Typically, homeowners in Haverhill can anticipate that most window installations will cost between $250 and $1,200, with the most common installations sitting at around $600. This is due to the fact that window installations depend on several factors specific to your home, including the size, material and number of windows you need to replace, as well as the location of your property.

With windows, efficiency is one of the most important factors for most homeowners. High efficiency windows may cost more initially, but by increasing the efficiency of your home — especially during the winter — they can give you decades of energy savings. According to Energy Star, purchasing certified energy-efficient windows can save Haverhill homeowners $434+ each year after replacing single-pane windows.

Requesting free quotes from several installers is the best way to figure out which one will work best for your budget.

What Services do Window Installers Offer?

There are generally two kinds of window replacement services: full-frame and pocket installations.

Full-frame installations involve replacing the entire window — the sill, frame, trim and all. These are most common when you want to change the style of your window or when it has significant rot or deterioration. Full-frame installations involve more time and labor and will increase overall costs. A pocket installation means replacing a window without removing the entire frame, which tends to be cheaper than a full-frame installation.

If you're still debating which type of installation you need, you can consult with your installer and get their advice. The choice mostly depends on the age of your window frames and if there's any damage.

Best Overall

Renewal by Andersen

★★★★★
4.5

  • Manufactures products in-house
  • Great industry reputation
  • Award-winning company
  • More expensive than competition

Best Affordability

Window World

★★★★★
4.5

  • Large serice area
  • EnergyStar Partner
  • Great industry reputation
  • Quality of service will depend on your area

Best for Businesses

Aeroseal Windows

★★★★★
4

  • Manufactures products in-house
  • Many years of experience
  • Custom Designs
  • Not ideal for residential installations

How We Choose the Best Window Installers in Haverhill

EcoWatch differs from other reviewers because we examine these companies through a sustainability lens. Along with energy efficiency, we analyzed window companies all across the state and ranked them based on the following methodology:

Service Area

This one is pretty self-explanatory, but we've chosen to highlight window installers that serve a wide variety of states and cities so you can find the best window installation company near you.

Work Quality

We're certain that you're not looking for a company to do a shoddy job installing windows. We've vetted each company included on this list to ensure its technicians are well-qualified and that the company has received lots of positive customer feedback to vouch for its service.

Customer Reviews

Another self-explanatory yet very important review factor is customer feedback. If the majority of customers don't have nice feedback about their experience with a certain installer, you won't see it featured on EcoWatch.

Cost

This one is a give-and-take: similar to most services, cheap window installation companies won't always provide the most quality service. On the other hand, we want to make sure we're highlighting companies that offer a wide range of price and financing options so they're accessible to most homeowners.

Warranty

As discussed previously, windows are a serious investment, so you'll want to make sure that investment is protected. Window installation companies with lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.

Years of Experience

Lastly, we like to see companies that have been in the industry for quite some time. Window installation companies that have more years of experience earn higher rankings by our standards. We like to see at least ten years of experience.

Haverhill, MA Window Replacement FAQs

What is the average cost to install windows?

The typical cost to install a single window can range from $450 to $650. There are a variety of factors that influence the cost, which include how energy-efficient the windows are, the number of windows, styles and sizes of windows, local labor costs, the materials used in designing the windows and your property's location.

What are the most common types of replacement windows?

There are several different kinds of windows you can get for your house, such as double-hung and single-hung windows, bay windows, transom windows, picture windows, slider windows, casement windows and awning windows.

Can you replace your own windows?

Although you can install your own windows, doing so requires a lot of time and handiness. Hiring a professional can help ensure that the job is done properly and that you won't have to spend the time and effort to do it yourself.

How long does it usually take to install windows?

Each window takes about 30 minutes to install depending on the type of window. However, the window installation can be a two-day job — or more — if you have a lot of windows that must be installed.

Should I replace all my windows at the same time?

If you're upgrading your windows because of energy-efficiency, replacing all of the windows at once is the only way to gain that benefit. On the other hand, if you have just one or two windows that are broken or drafty, you can replace just those.

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